I have a web application hosted in IIS and configured with Windows Authentication. It is supposed to be SSO (Single sign-on) and work without prompting users for their credentials. It works in this way if I access it via server name or cname. Example:
https://serverName/applicationName
https://cname/applicationName
However, it asks for user credentials if I access the application via full domain name such as:
https://serverName.domain.com/applicationName
https://cname.domain.com/applicationName
Any ideas what the issue would be?